EP1399297B1 - Expulsion device actuated by a pressure medium - Google Patents

Expulsion device actuated by a pressure medium Download PDF

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Publication number
EP1399297B1
EP1399297B1 EP02747401A EP02747401A EP1399297B1 EP 1399297 B1 EP1399297 B1 EP 1399297B1 EP 02747401 A EP02747401 A EP 02747401A EP 02747401 A EP02747401 A EP 02747401A EP 1399297 B1 EP1399297 B1 EP 1399297B1
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EP
European Patent Office
Prior art keywords
driving
piston
pressure medium
cylinder
pressure
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EP02747401A
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German (de)
French (fr)
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EP1399297A1 (en
Inventor
Gerhard Kral
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Prebena Wilfried Bornemann GmbH and Co KG
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Prebena Wilfried Bornemann GmbH and Co KG
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
    • B25C1/00—Hand-held nailing tools; Nail feeding devices
    • B25C1/04—Hand-held nailing tools; Nail feeding devices operated by fluid pressure, e.g. by air pressure

Definitions

  • the present invention relates to a fluid-operated expulsion device according to the preamble of claim 1.
  • the US 3106136 A shows a pressure-medium driven expelling device for expelling objects from a reservoir by means of a pressure-medium-loaded driving piston, wherein the pressure medium loading serves both to carry out a feed movement and to perform a return movement of the driving piston.
  • an expulsion device in which a device body is provided with a pressure medium memory removably arranged thereon, which is triggered by a valve device for pressurizing a piston, which is connected to a percussion tappet.
  • the accumulator is formed in the known expulsion device as a CO 2 cartridge whose filling pressure acts on actuation of a triggering device on the piston connected to the percussion plunger and thereby causes a feed movement of the percussion plunger.
  • the object of the present invention is to make it possible to increase the expulsion frequency and the operating time in the case of a expulsion device which is provided with an exchangeable accumulator and thus can be operated independently of the mains.
  • the expulsion device has an interchangeable with a device body associated pressure fluid accumulator, and the device body has a from the pressure medium reservoir by means of a pressure reducing device separate pressure chamber for pressure medium loading of the driving piston having a reduced relative to the filling pressure of the pressure medium accumulator working pressure. Due to the interposed arrangement of the pressure reducing device, the filling pressure in the pressure fluid reservoir can be increased to a multiple of the working pressure, so that a significantly increased service life of the expelling device is achieved before a replacement of the pressure fluid reservoir necessary.
  • a release device for triggering the Druckstoffbeauchlagung the driving piston, which simultaneously serves to actuate a vent valve means for venting a driving piston receiving the driving cylinder, a synchronization between the pressure medium and the activation of the vent valve device is realized in a simple manner.
  • a particularly direct mechanical realization of the synchronization and thus also particularly short working cycles of the expulsion device become possible when the venting valve device is coupled to the triggering device via a plunger device.
  • the venting valve device is designed as a piston valve with a valve axis which intersects the driving cylinder axis.
  • very high switching cycle numbers of the valve device are made possible by the design of the valve device as a piston valve.
  • the drive cylinder axis intersecting arrangement of the valve device allows a particularly effective and thus fast venting of the drive cylinder on the cylinder bottom.
  • the drive piston of the drive cylinder simultaneously serves as a control piston for carrying out the pressure-medium-actuated return movement of the drive piston in the drive cylinder, due to the function-integrated effect of the drive piston, the constructive realization of a pressure-medium-actuated drive piston return with a very low cost of mechanical parts possible.
  • the drive cylinder is surrounded in the region of its expulsion by an annular chamber with an arranged at a distance from the end cross section of the displacement of the drive cylinder inflow and arranged in the region of the end cross-section, opening into the displacement Outflow device, wherein the distance between the inflow device and the outflow device corresponds at least to the axial extent of the drive piston.
  • a further increase in the effectiveness of the use of the pressure fluid reservoir provided pressure potential is possible when the driving cylinder has at its expulsion end a cylinder base with a ram passage for a drive piston connected to the drive piston, with a arranged in the ram passage radial sealing device.
  • a largely pressure medium-tight seal of the necessary relative movement of the drive plunger annular gap between the drive rod and the plunger bushing is possible, so that leakage through the annular gap can be largely prevented.
  • the sealing device is arranged in the cylinder bottom, any configuration of the sealing seat is possible independently of influencing themaschinerumbles.
  • the expulsion device for expelling objects, ie solids, or even fluid substances.
  • the reservoir is designed as a magazine device for receiving mechanical fastening means and the driving ram serves to impact a sporadically received in a arranged on the magazine device firing channel fastener
  • the expelling device can be used in a particularly advantageous manner, for example as a nail device.
  • the reservoir is designed as a liquid reservoir
  • the drive plunger is used to pressurize a quantity of liquid received in a metering device arranged on the liquid storage device.
  • This amount of liquid may be, for example, a liquid dye which is expelled in metered quantities, for example for the production of colored dots. It is also possible to meter amounts of adhesive, for example for the production of adhesive dots.
  • Fig. 1 1 shows a side view of an overall illustration of an expulsion device 10.
  • the expulsion device 10 comprises a device body 11 with a gripping part 12 and a driving piston / cylinder unit 13, wherein the gripping part 12 has a pressure medium reservoir 14 for receiving compressed gas and the driving piston / cylinder unit 13 a reservoir formed here as a magazine device 15 is connected.
  • the handle part 12 is detachably connected to the accumulator 14 at its end facing away from the driving piston / cylinder unit 13 via a coupling device 16, which may for example be designed as a screw thread.
  • a coupling device 16 which may for example be designed as a screw thread.
  • adjustable working pressure for the driving piston / cylinder unit 13 is provided in the handle part 12 a separate from the accumulator 14 via a pressure reducing device 17 pressure chamber 18.
  • a filling valve device 19 for acting on a Driving piston 20 of the driving piston / cylinder unit 13 with the working pressure upon actuation of the filling valve means 19 by a triggering device 21 is arranged.
  • the filling valve device 19 has a sealing element pretensioned in the valve opening direction by a valve spring 66, which is pressed against a valve opening 54 by a valve stem 24 acted upon by a closing spring 71 for sealing. How out Fig.
  • a trigger lever 22 of the triggering device 21 is mechanically coupled to a valve piston 27 of a venting valve device 28 via a push rod 25 extending transversely to a valve axis 23 of the filling valve device 19 and a tilting lever 26 mounted in the handle part 12.
  • vent valve means 28 for releasing or closing a vent opening 29 in one of the vent valve means 28 adjacent arranged first cylinder bottom 30 of a drive cylinder 31 of the drive piston / cylinder unit 13.
  • the vent valve device 28 includes this purpose a valve body 32 which is between the vent opening 29th in the cylinder bottom 30 and a housing vent 33 is arranged so that a valve axis 64 of the vent valve means 28 a grasperachse 65 of the drive cylinder 31 intersects.
  • the venting takes place via a valve bore 34 arranged in the venting path (FIG. Fig. 2 ) of the vent valve device 28, wherein the valve bore 34 simultaneously serves to receive the valve piston 27.
  • valve piston 27 radial here designed as an O-ring seal means 35 that the sealing means 35 by means of a corresponding axial movement in a valve piston 27 coaxial Valve bore 62 of the vent valve device 28 is moved in or out.
  • a valve pin 36 of the valve piston 27 another, here also designed as an O-ring radial sealing means 37 which forms an annular gap-shaped sealing chamber 38 in cooperation with the first sealing means 35, the fluid technically via a radial annular channel means 39 with the vent opening 29 of the drive cylinder 31 is connected.
  • the drive piston / cylinder unit 13 has the drive cylinder 31 inserted into a housing 40 and the drive piston 20 axially displaceable in the drive cylinder 31.
  • an annular chamber 42 is formed in the region of an expelling end 41 of the driving piston / cylinder unit 13, which is provided via a first annular channel device 43 provided as an inflow device and axially spaced from the annular channel device 43 via a second annular channel device designed as an outflow device 44 is connected to a displacement or lumen 45 of the drive cylinder 31.
  • the annular channel device 43 is provided on the outer wall of the driving cylinder 31 with an annular groove 69 in which an elastically biased O-ring seal 70 is arranged.
  • the axial distance of the annular channel means 43 and 44 is chosen so that it is at least slightly larger than the axial dimension of the driving piston 20th
  • the drive piston 20 is formed in the present case as a sleeve into which a drive rod 46 is screwed with a screw 47.
  • a second cylinder bottom 49 is arranged, which is provided with a ram passage 50, in which the drive rod 46 engages with a positioning of the drive piston 20 in the region of the expulsion end 41 with a sealing collar 51.
  • a radial sealing device 63 designed here as an O-ring is provided in the plunger bushing 50 3 and 4 shown axial positions of the drive piston sealingly abuts the drive rod 46.
  • the cylinder bottoms 30 and 49 are made in the present case of an elastomeric material.
  • a duty cycle of the expelling device 10 comprising an axial advancing movement of the driving piston 20 until it abuts against the cylinder base 49 disposed at the expulsion end 41 and a return movement of the driving piston 20 until it abuts against the exhaust-air-side cylinder bottom 30 located adjacent the vent opening 29 of the drive cylinder 31.
  • the trigger lever 22 is actuated so that the push rod 25 is moved against the rocker arm 26, which in turn acts on a plunger end 55 of the valve piston 27 of the vent valve means 28 and against the action of a return spring 56th ( Fig. 2 ) the valve piston 27 is advanced axially to the sealing closure of the vent opening 29.
  • the trigger 22 detects one on the trigger lever 22nd pivotally arranged driving pawl 52 an annular bead 53 of the valve stem 24 and arranged at the lower end of the pressure chamber 18 valve opening 54 (FIG. Fig.
  • the drive piston is accelerated axially together with the drive ram 46 arranged thereon up to the stop against the cylinder base 49 arranged at the drive end 41 (FIG. Fig. 4 ). Since the driver contact between the driving pawl 52 and the annular bead 53 on the valve tappet 24 of the filling valve device 19 is formed so that there is a rolling contact between the driving pawl 52 and the annular bead 53 when the trigger lever 22 is actuated, after reaching a defined lever travel of the trigger lever 22 detected by the driving pawl 52 annular bead is released again and closed the valve opening 54 of the pressure chamber 18 via the valve operated by the closing spring tappet 24 again.
  • the stop of the driving piston 20 against the cylinder bottom 49 can be omitted due to a too large material resistance when driving a arranged in the firing channel 59 steel pin 58 in a material, for example caused by a branch area in a board to be nailed.

Abstract

An expulsion device expels objects or liquid materials from a reservoir using a drive piston which is subjected to the action of a pressure medium. The expulsion device includes a pressure medium container that is exchangeable and connected to a device body. An actuation device enables the pressure medium to act on the drive piston which is thus displaced in a forward and a backward direction.

Description

Die vorliegende Erfindung betrifft eine druckmittelbetriebene Austreibvorrichtung gemäß dem Oberbegriff des Anspruchs 1.The present invention relates to a fluid-operated expulsion device according to the preamble of claim 1.

Die US 3106136 A zeigt eine druckmittelbetriebene Austreibvorrichtung zum Austreiben von Gegenständen aus einem Reservoir mittels eines druckmittelbeaufschlagten Treibkolbens, wobei die Druckmittelbeaufschlagung sowohl zur Ausführung einer Vorschubbewegung als auch zur Ausführung einer Rückstellbewegung des Treibkolbens dient.The US 3106136 A shows a pressure-medium driven expelling device for expelling objects from a reservoir by means of a pressure-medium-loaded driving piston, wherein the pressure medium loading serves both to carry out a feed movement and to perform a return movement of the driving piston.

Aus der EP 0 191 186 A2 ist eine Austreibvorrichtung bekannt, bei der ein Gerätekörper mit einem abnehmbar daran angeordneten Druckmittelspeicher versehen ist, der ausgelöst durch eine Ventileinrichtung zur Druckbeaufschlagung eines Kolbens dient, der mit einem Schlagstößel verbunden ist. Der Druckmittelspeicher ist bei der bekannten Austreibvorrichtung als eine CO2-Patrone ausgebildet, deren Fülldruck bei Betätigung einer Auslösevorrichtung auf den mit dem Schlagstößel verbundenen Kolben wirkt und hierdurch eine Vorschubbewegung des Schlagstößels bewirkt. Zur Ausführung einer Rückstellbewegung des Kolbens, um den Schlagstößel zur Wiederholung des Austreibvorgangs in seine Ausgangsposition zurück zu bewegen, wird der Kolben durch eine mechanische Mitnahmeeinrichtung in die Ausgangsstellung zurückbewegt.From the EP 0 191 186 A2 an expulsion device is known, in which a device body is provided with a pressure medium memory removably arranged thereon, which is triggered by a valve device for pressurizing a piston, which is connected to a percussion tappet. The accumulator is formed in the known expulsion device as a CO 2 cartridge whose filling pressure acts on actuation of a triggering device on the piston connected to the percussion plunger and thereby causes a feed movement of the percussion plunger. To perform a return movement of the piston to move the percussion tappet to repeat the Austreibvorgangs back to its original position, the piston is moved back by a mechanical entrainment device to the starting position.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, bei einer mit einem austauschbaren Druckmittelspeicher versehenen und somit netzunabhängig betreibbaren Austreibvorrichtung eine Erhöhung der Austreibfrequenz und der Betriebsdauer zu ermöglichen.The object of the present invention is to make it possible to increase the expulsion frequency and the operating time in the case of a expulsion device which is provided with an exchangeable accumulator and thus can be operated independently of the mains.

Diese Aufgabe wird durch eine druckmittelbetriebene Austreibvorrichtung mit den Merkmalen des Anspruchs 1 gelöst.This object is achieved by a pressure medium driven expelling device having the features of claim 1.

Erfindungsgemäß weist die Austreibvorrichtung einen austauschbar mit einem Gerätekörper verbundenen Druckmittelspeicher auf, und der Gerätekörper weist eine vom Druckmittelspeicher mittels einer Druckminderereinrichtung getrennte Druckkammer zur Druckmittelbeaufschlagung des Treibkolbens mit einem gegenüber dem Fülldruck des Druckmittelspeichers geminderten Arbeitsdruck aufweist. Durch die zwischengeschaltete Anordnung der Druckminderereinrichtung kann der Fülldruck im Druckmittelspeicher auf ein Vielfaches des Arbeitsdrucks angehoben werden, so dass eine wesentlich erhöhte Betriebsdauer der Austreibvorrichtung vor einem notwendig werdenden Austausch des Druckmittelspeichers erreicht wird.According to the invention, the expulsion device has an interchangeable with a device body associated pressure fluid accumulator, and the device body has a from the pressure medium reservoir by means of a pressure reducing device separate pressure chamber for pressure medium loading of the driving piston having a reduced relative to the filling pressure of the pressure medium accumulator working pressure. Due to the interposed arrangement of the pressure reducing device, the filling pressure in the pressure fluid reservoir can be increased to a multiple of the working pressure, so that a significantly increased service life of the expelling device is achieved before a replacement of the pressure fluid reservoir necessary.

Wenn zur Auslösung der Druckmittelbeauchlagung des Treibkolbens eine Auslösevorrichtung vorgesehen ist, die gleichzeitig zur Betätigung einer Entlüftungsventileinrichtung zur Entlüftung eines den Treibkolben aufnehmenden Treibzylinders dient, ist auf einfache Art und Weise eine Synchronisation zwischen der Druckmittelbeaufschlagung und der Ansteuerung der Entlüftungsventileinrichtung realisiert.If a release device is provided for triggering the Druckmittelbeauchlagung the driving piston, which simultaneously serves to actuate a vent valve means for venting a driving piston receiving the driving cylinder, a synchronization between the pressure medium and the activation of the vent valve device is realized in a simple manner.

Eine besonders direkte mechanische Realisierung der Synchronisation und damit auch besonders kurze Arbeitszyklen der Austreibvorrichtung werden möglich, wenn die Entlüftungsventileinrichtung über eine Stößeleinrichtung mit der Auslösevorrichtung gekoppelt ist.A particularly direct mechanical realization of the synchronization and thus also particularly short working cycles of the expulsion device become possible when the venting valve device is coupled to the triggering device via a plunger device.

Bei einer bevorzugten Ausführungsform der Austreibvorrichtung ist die Entlüftungsventileinrichtung als Kolbenventil ausgebildet mit einer die Treibzylinderachse schneidenden Ventilachse. Zum einen werden durch die Ausbildung der Ventileinrichtung als Kolbenventil sehr hohe Schaltspielzahlen der Ventileinrichtung ermöglicht. Zum anderen ermöglicht die die Treibzylinderachse schneidende Anordnung der Ventileinrichtung eine besonders effektive und damit schnelle Entlüftung des Treibzylinders über den Zylinderboden.In a preferred embodiment of the expelling device, the venting valve device is designed as a piston valve with a valve axis which intersects the driving cylinder axis. On the one hand, very high switching cycle numbers of the valve device are made possible by the design of the valve device as a piston valve. On the other hand, the drive cylinder axis intersecting arrangement of the valve device allows a particularly effective and thus fast venting of the drive cylinder on the cylinder bottom.

Wenn der Treibkolben des Treibzylinders gleichzeitig als Steuerkolben zur Ausführung der druckmittelbetätigten Rückstellbewegung des Treibkolbens im Treibzylinder dient, wird aufgrund der funktionsintegrierten Wirkung des Treibkolbens die konstruktive Realisierung einer druckmittelbetätigten Treibkolbenrückführung mit einem besonders geringen Aufwand an mechanischen Teilen möglich. Hinsichtlich eines noch weiter vereinfachten konstruktiven Aufbaus erweist es sich auch als vorteilhaft, wenn der Treibzylinder im Bereich seines Austreibendes von einer Ringkammer umgeben ist mit einer mit Abstand zum Endquerschnitt des Hubraums des Treibzylinders angeordneten Einströmeinrichtung und einer im Bereich des Endquerschnitts angeordneten, in den Hubraum einmündenden Ausströmeinrichtung, wobei der Abstand zwischen der Einströmeinrichtung und der Ausströmeinrichtung zumindest der axialen Erstreckung des Treibkolbens entspricht.If the drive piston of the drive cylinder simultaneously serves as a control piston for carrying out the pressure-medium-actuated return movement of the drive piston in the drive cylinder, due to the function-integrated effect of the drive piston, the constructive realization of a pressure-medium-actuated drive piston return with a very low cost of mechanical parts possible. With regard to an even more simplified structural design, it also proves to be advantageous if the drive cylinder is surrounded in the region of its expulsion by an annular chamber with an arranged at a distance from the end cross section of the displacement of the drive cylinder inflow and arranged in the region of the end cross-section, opening into the displacement Outflow device, wherein the distance between the inflow device and the outflow device corresponds at least to the axial extent of the drive piston.

Eine weitere Steigerung in der Effektivität der Nutzung des über den Druckmittelspeicher zur Verfügung gestellten Druckpotenzials wird möglich, wenn der Treibzylinder an seinem Austreibende einen Zylinderboden mit einer Stößeldurchführung für einen mit dem Treibkolben verbundenen Treibstößel aufweist, mit einer in der Stößeldurchführung angeordneten radialen Dichteinrichtung. Hierdurch wird eine weitgehend druckmitteldichte Abdichtung des zur Relativbewegung des Treibstößels notwendigen Ringspalts zwischen dem Treibstößel und der Stößeldurchführung möglich, so dass ein Leckfluss durch den Ringspalt weitestgehend verhindert werden kann. Wenn darüber hinaus die Dichteinrichtung im Zylinderboden angeordnet ist, wird eine beliebige Ausgestaltung des Dichtungssitzes unabhängig von einer Beeinflussung des Treibstößelquerschnitts möglich.A further increase in the effectiveness of the use of the pressure fluid reservoir provided pressure potential is possible when the driving cylinder has at its expulsion end a cylinder base with a ram passage for a drive piston connected to the drive piston, with a arranged in the ram passage radial sealing device. As a result, a largely pressure medium-tight seal of the necessary relative movement of the drive plunger annular gap between the drive rod and the plunger bushing is possible, so that leakage through the annular gap can be largely prevented. Moreover, if the sealing device is arranged in the cylinder bottom, any configuration of the sealing seat is possible independently of influencing the Treibstößelquerschnitts.

Je nach Art und Ausbildung des zur Kombination mit der Austreibvorrichtung vorgesehenen Reservoirs ist es möglich, die erfindungsgemäße Austreibvorrichtung zum Austreiben von Gegenständen, also Festkörpern, oder auch fluiden Stoffen einzusetzen.Depending on the nature and design of the reservoir provided for combination with the expulsion device, it is possible to use the expulsion device according to the invention for expelling objects, ie solids, or even fluid substances.

Wenn gemäß einer besonders vorteilhaften Ausführungsform der Austreibvorrichtung das Reservoir als Magazinvorrichtung zur Aufnahme mechanischer Befestigungsmittel ausgebildet ist und der Treibstößel zur Schlagbeaufschlagung eines vereinzelt in einem an der Magazinvorrichtung angeordneten Schusskanal aufgenommenen Befestigungsmittels dient, kann die Austreibvorrichtung in besonders vorteilhafter Weise beispielsweise als Nageleinrichtung verwendet werden.If, according to a particularly advantageous embodiment of the expelling device, the reservoir is designed as a magazine device for receiving mechanical fastening means and the driving ram serves to impact a sporadically received in a arranged on the magazine device firing channel fastener, the expelling device can be used in a particularly advantageous manner, for example as a nail device.

Bei einer weiteren vorteilhaften Ausführungsform der Austreibvorrichtung ist das Reservoir als Flüssigkeitsspeicher ausgebildet, und der Treibstößel dient zur Druckbeaufschlagung einer in einer am Flüssigkeitsspeicher angeordneten Dosiereinrichtung aufgenommenen Flüssigkeitsmenge. Bei dieser Flüssigkeitsmenge kann es sich beispielsweise um einen flüssigen Farbstoff handeln, der in dosierter Menge, beispielsweise zur Erzeugung von Farbpunkten, ausgetrieben wird. Auch ist es möglich, Klebermengen, beispielsweise zur Erzeugung von Klebepunkten, zu dosieren.In a further advantageous embodiment of the expelling device, the reservoir is designed as a liquid reservoir, and the drive plunger is used to pressurize a quantity of liquid received in a metering device arranged on the liquid storage device. This amount of liquid may be, for example, a liquid dye which is expelled in metered quantities, for example for the production of colored dots. It is also possible to meter amounts of adhesive, for example for the production of adhesive dots.

Nachfolgend wird anhand der Zeichnungen eine vorteilhafte Ausführungsform der Austreibvorrichtung näher erläutert. Es zeigen:

Fig. 1
eine Seitenansicht der Austreibvorrichtung mit einer Treibkolben-/Zylindereinheit in teilweiser Schnittdarstellung;
Fig. 2
eine mit der Treibkolben-/Zylindereinheit zusammenwirkende Steuerventileinrichtung in vergrößerter Darstellung;
Fig. 3
die Treibkolben-/Zylindereinheit der in Fig. 1 dargestellten Austreibvorrichtung mit Anschlagstellung des Treibkolbens am austreibseitigen Zylinderboden;
Fig. 4
die in Fig. 3 dargestellte Treibkolben/Zylindereinheit mit relativ zum austreibseitigen Kolbenboden beabstandetem Treibkolben.
Hereinafter, an advantageous embodiment of the expelling device will be explained in more detail with reference to the drawings. Show it:
Fig. 1
a side view of the expelling device with a driving piston / cylinder unit in a partial sectional view;
Fig. 2
a cooperating with the driving piston / cylinder unit control valve device in an enlarged view;
Fig. 3
the drive piston / cylinder unit of in Fig. 1 shown Austreibvorrichtung with stop position of the drive piston on driven-out cylinder base;
Fig. 4
in the Fig. 3 illustrated drive piston / cylinder unit with spaced apart relative to the driven-side piston head driving piston.

Fig. 1 zeigt in einer Seitenansicht eine Gesamtdarstellung einer Austreibvorrichtung 10. Die Austreibvorrichtung 10 umfasst einen Gerätekörper 11 mit einem Griffteil 12 und einer Treibkolben-/Zylindereinheit 13, wobei an das Griffteil 12 ein Druckmittelspeicher 14 zur Aufnahme von komprimiertem Gas und an die Treibkolben-/Zylindereinheit 13 ein hier als Magazinvorrichtung 15 ausgebildetes Reservoir angeschlossen ist. Fig. 1 1 shows a side view of an overall illustration of an expulsion device 10. The expulsion device 10 comprises a device body 11 with a gripping part 12 and a driving piston / cylinder unit 13, wherein the gripping part 12 has a pressure medium reservoir 14 for receiving compressed gas and the driving piston / cylinder unit 13 a reservoir formed here as a magazine device 15 is connected.

Das Griffteil 12 ist an seinem von der Treibkolben-/Zylindereinheit 13 abgewandten Ende über eine Kopplungseinrichtung 16, die beispielsweise als Einschraubgewinde ausgebildet sein kann, lösbar mit dem Druckmittelspeicher 14 verbunden. Zur Einstellung eines unabhängig von einem Fülldruck im Druckmittelspeicher 14 einstellbaren Arbeitsdrucks für die Treibkolben-/Zylindereinheit 13 ist im Griffteil 12 eine vom Druckmittelspeicher 14 über eine Druckminderereinrichtung 17 getrennte Druckkammer 18 vorgesehen.The handle part 12 is detachably connected to the accumulator 14 at its end facing away from the driving piston / cylinder unit 13 via a coupling device 16, which may for example be designed as a screw thread. To set an independently of a filling pressure in the accumulator 14 adjustable working pressure for the driving piston / cylinder unit 13 is provided in the handle part 12 a separate from the accumulator 14 via a pressure reducing device 17 pressure chamber 18.

Zwischen der Druckkammer 18 und der Treibkolben-/Zylindereinheit 113 ist eine Befüllungsventileinrichtung 19 zur Beaufschlagung eines Treibkolbens 20 der Treibkolben-/Zylindereinheit 13 mit dem Arbeitsdruck bei Betätigung der Befüllungsventileinrichtung 19 durch eine Auslösevorrichtung 21 angeordnet. Die Befüllungsventileinrichtung 19 weist ein in Ventilöffnungsrichtung durch eine Ventilfeder 66 vorgespanntes Dichtelement auf, welches durch einen mit einer Schließfeder 71 beaufschlagten Ventilstößel 24 zur Abdichtung gegen eine Ventilöffnung 54 gedrückt wird. Wie aus Fig. 1 hervorgeht, ist ein Abzugshebel 22 der Auslösevorrichtung 21 über eine quer zu einer Ventilachse 23 der Befüllungsventileinrichtung 19 verlaufende Stößelstange 25 und einen im Griffteil 12 gelagerten Kipphebel 26 mechanisch mit einem Ventilkolben 27 einer Entlüftungsventileinrichtung 28 gekoppelt.Between the pressure chamber 18 and the driving piston / cylinder unit 113 is a filling valve device 19 for acting on a Driving piston 20 of the driving piston / cylinder unit 13 with the working pressure upon actuation of the filling valve means 19 by a triggering device 21 is arranged. The filling valve device 19 has a sealing element pretensioned in the valve opening direction by a valve spring 66, which is pressed against a valve opening 54 by a valve stem 24 acted upon by a closing spring 71 for sealing. How out Fig. 1 A trigger lever 22 of the triggering device 21 is mechanically coupled to a valve piston 27 of a venting valve device 28 via a push rod 25 extending transversely to a valve axis 23 of the filling valve device 19 and a tilting lever 26 mounted in the handle part 12.

Wie sich weiter insbesondere aus der vergrößerten Darstellung gemäß Fig. 2 ergibt, befindet sich eine Entlüftungsventileinrichtung 28 zur Freigabe bzw. zum Verschließen einer Entlüftungsöffnung 29 in einem der Entlüftungsventileinrichtung 28 benachbart angeordneten ersten Zylinderboden 30 eines Treibzylinders 31 der Treibkolben-/Zylindereinheit 13. Die Entlüftungsventileinrichtung 28 umfasst hierzu einen Ventilkörper 32, der zwischen der Entlüftungsöffnung 29 im Zylinderboden 30 und einer Gehäuseentlüftungsöffnung 33 so angeordnet ist, dass eine Ventilachse 64 der Entlüftungsventileinrichtung 28 eine Treibzylinderachse 65 des Treibzylinders 31 schneidet. Die Entlüftung erfolgt dabei über eine im Entlüftungsweg angeordnete Ventilbohrung 34 ( Fig. 2 ) der Entlüftungsventileinrichtung 28, wobei die Ventilbohrung 34 gleichzeitig zur Aufnahme des Ventilkolbens 27 dient. Der Durchfluss der Abluft aus dem Treibzylinder 31 durch die Ventilbohrung 34 wird über eine auf dem Ventilkolben 27 angeordnete radiale, hier als O-Ring ausgeführte Dichtungseinrichtung 35 dadurch freigegeben oder versperrt, dass die Dichteinrichtung 35 vermittels einer entsprechenden axialen Bewegung in eine zum Ventilkolben 27 koaxiale Ventilbohrung 62 der Entlüftungsventileinrichtung 28 hinein oder hinaus bewegt wird. Im vorliegenden Fall befindet sich auf einem Ventilzapfen 36 des Ventilkolbens 27 eine weitere, hier ebenfalls als O-Ring ausgeführte radiale Dichteinrichtung 37, die im Zusammenwirken mit der ersten Dichteinrichtung 35 einen ringspaltförmigen Dichtungsraum 38 bildet, der fluidtechnisch über eine radiale Ringkanaleinrichtung 39 mit der Entlüftungsöffnung 29 des Treibzylinders 31 verbunden ist.As further in particular from the enlarged view according to Fig. 2 results, is a vent valve means 28 for releasing or closing a vent opening 29 in one of the vent valve means 28 adjacent arranged first cylinder bottom 30 of a drive cylinder 31 of the drive piston / cylinder unit 13. The vent valve device 28 includes this purpose a valve body 32 which is between the vent opening 29th in the cylinder bottom 30 and a housing vent 33 is arranged so that a valve axis 64 of the vent valve means 28 a Treibzylinderachse 65 of the drive cylinder 31 intersects. The venting takes place via a valve bore 34 arranged in the venting path (FIG. Fig. 2 ) of the vent valve device 28, wherein the valve bore 34 simultaneously serves to receive the valve piston 27. The flow of the exhaust air from the drive cylinder 31 through the valve bore 34 is thereby released or blocked by a arranged on the valve piston 27 radial, here designed as an O-ring seal means 35 that the sealing means 35 by means of a corresponding axial movement in a valve piston 27 coaxial Valve bore 62 of the vent valve device 28 is moved in or out. In the present case is located on a valve pin 36 of the valve piston 27 another, here also designed as an O-ring radial sealing means 37 which forms an annular gap-shaped sealing chamber 38 in cooperation with the first sealing means 35, the fluid technically via a radial annular channel means 39 with the vent opening 29 of the drive cylinder 31 is connected.

Wie aus den Fig. 3 und 4 , in denen die Treibkolben-/Zylindereinheit 13 mit zwei unterschiedlichen axialen Stellungen des Treibkolbens 20 dargestellt ist, hervorgeht, weist die Treibkolben-/Zylindereinheit 13 den in ein Gehäuse 40 eingesetzten Treibzylinder 31 sowie den axial im Treibzylinder 31 verschiebbaren Treibkolben 20 auf. Infolge der im Gehäuse 40 koaxialen Anordnung des Treibzylinders 31 ist im Bereich eines Austreibendes 41 der Treibkolben-/Zylindereinheit 13 eine Ringkammer 42 ausgebildet, die über eine als Einströmeinrichtung vorgesehene erste Ringkanaleinrichtung 43 und axial beabstandet zu der Ringkanaleinrichtung 43 über eine als Ausströmeinrichtung ausgebildete zweite Ringkanaleinrichtung 44 mit einem Hubraum oder Lumen 45 des Treibzylinders 31 verbunden ist. Zur Realisierung einer von der Druckrichtung abhängigen Ringkanaldichtung 68 ist die Ringkanaleinrichtung 43 auf der Außenwand des Treibzylinders 31 mit einer Ringnut 69 versehen, in der elastisch vorgespannt eine O-Ring-Dichtung 70 angeordnet ist. Der axiale Abstand der Ringkanaleinrichtungen 43 und 44 ist dabei so gewählt, dass er zumindest geringfügig größer ist als die axiale Abmessung des Treibkolbens 20.Like from the 3 and 4 in which the drive piston / cylinder unit 13 is shown with two different axial positions of the drive piston 20, the drive piston / cylinder unit 13 has the drive cylinder 31 inserted into a housing 40 and the drive piston 20 axially displaceable in the drive cylinder 31. As a result of the coaxial arrangement in the housing 40 of the drive cylinder 31, an annular chamber 42 is formed in the region of an expelling end 41 of the driving piston / cylinder unit 13, which is provided via a first annular channel device 43 provided as an inflow device and axially spaced from the annular channel device 43 via a second annular channel device designed as an outflow device 44 is connected to a displacement or lumen 45 of the drive cylinder 31. To realize a dependent of the pressure direction ring channel seal 68, the annular channel device 43 is provided on the outer wall of the driving cylinder 31 with an annular groove 69 in which an elastically biased O-ring seal 70 is arranged. The axial distance of the annular channel means 43 and 44 is chosen so that it is at least slightly larger than the axial dimension of the driving piston 20th

Der Treibkolben 20 ist im vorliegenden Fall als Hülse ausgebildet, in die ein Treibstößel 46 mit einem Einschraubende 47 eingeschraubt ist.The drive piston 20 is formed in the present case as a sleeve into which a drive rod 46 is screwed with a screw 47.

Zur Verdrehsicherung zwischen dem Einschraubende 47 des Treibstößels 46 und dem Treibkolben 20 dient ein Sicherungsstift 48.To prevent rotation between the screw 47 of the drive rod 46 and the drive piston 20 is a locking pin 48th

Am austreibseitigen Ende des Treibzylinders 31 ist ein zweiter Zylinderboden 49 angeordnet, der mit einer Stößeldurchführung 50 versehen ist, in die der Treibstößel 46 bei einer Positionierung des Treibkolbens 20 im Bereich des Austreibendes 41 mit einem Dichtbund 51 eingreift. Zur Abdichtung der Stößeldurchführung 50 ist in der Stößeldurchführung 50 eine hier als O-Ring ausgebildete radiale Dichteinrichtung 63 vorgesehen, die in den in den Fig. 3 und 4 dargestellten Axialpositionen des Treibkolbens abdichtend am Treibstößel 46 anliegt. Zur Abdämpfung eines im Betrieb der Austreibvorrichtung 10 durch den Treibkolben 20 auf die Zylinderböden 30 ( Fig. 1 und 2 ) und 49 wirkenden Anschlagstoßes sind die Zylinderböden 30 und 49 im vorliegenden Fall aus einem Elastomermaterial hergestellt.At the driven end of the drive cylinder 31, a second cylinder bottom 49 is arranged, which is provided with a ram passage 50, in which the drive rod 46 engages with a positioning of the drive piston 20 in the region of the expulsion end 41 with a sealing collar 51. To seal the plunger bushing 50, a radial sealing device 63 designed here as an O-ring is provided in the plunger bushing 50 3 and 4 shown axial positions of the drive piston sealingly abuts the drive rod 46. For damping during operation of the expulsion device 10 by the driving piston 20 on the cylinder bottoms 30 ( Fig. 1 and 2 ) and 49 acting impact shock, the cylinder bottoms 30 and 49 are made in the present case of an elastomeric material.

Nachfolgend wird ein Arbeitszyklus der Austreibvorrichtung 10, umfassend eine axiale Vorschubbewegung des Treibkolbens 20 bis zum Anschlag gegen den am Austreibende 41 angeordneten Zylinderboden 49 und eine Rückstellbewegung des Treibkolbens 20 bis zum Anschlag gegen den benachbart der Entlüftungsöffnung 29 des Treibzylinders 31 angeordneten abluftseitigen Zylinderboden 30 ( Fig. 1 ) beschrieben:Hereinafter, a duty cycle of the expelling device 10, comprising an axial advancing movement of the driving piston 20 until it abuts against the cylinder base 49 disposed at the expulsion end 41 and a return movement of the driving piston 20 until it abuts against the exhaust-air-side cylinder bottom 30 located adjacent the vent opening 29 of the drive cylinder 31. Fig. 1 ):

Zur Auslösung der Austreibvorrichtung 10 mit einer axialen Vorschubbewegung des Treibkolbens 20 wird der Abzugshebel 22 betätigt, so dass die Stößelstange 25 gegen den Kipphebel 26 bewegt wird, der wiederum auf ein Stößelende 55 des Ventilkolbens 27 der Entlüftungsventileinrichtung 28 wirkt und entgegen der Wirkung einer Rückstellfeder 56 ( Fig. 2 ) den Ventilkolben 27 zum abdichtenden Verschluss der Entlüftungsöffnung 29 axial vorbewegt wird. Mit fortschreitender Auslenküng des Abzugshebels 22 erfaßt eine am Abzugshebel 22 gelenkig angeordnete Mitnehmerklinke 52 einen Ringwulst 53 des Ventilstößels 24 und die am unteren Ende der Druckkammer 18 angeordnete Ventilöffnung 54 ( Fig. 1 ) wird freigegeben, so dass nun bei verschlossener Entlüftungsöffnung 29 über eine sich von der Ventilöffnung 54 der Druckkammer 18 zum Entlüftungsende 57 des Treibzylinders 31 erstreckende Druckleitung 58, die radial in den Hubraum 45 des Treibzylinders 31 einmündet, eine Befüllung des Treibzylinders mit dem unter Arbeitsdruck stehenden Gas erfolgt.To trigger the Austreibvorrichtung 10 with an axial feed movement of the drive piston 20, the trigger lever 22 is actuated so that the push rod 25 is moved against the rocker arm 26, which in turn acts on a plunger end 55 of the valve piston 27 of the vent valve means 28 and against the action of a return spring 56th ( Fig. 2 ) the valve piston 27 is advanced axially to the sealing closure of the vent opening 29. With progressive Auslenküng the trigger 22 detects one on the trigger lever 22nd pivotally arranged driving pawl 52 an annular bead 53 of the valve stem 24 and arranged at the lower end of the pressure chamber 18 valve opening 54 (FIG. Fig. 1 ) is released, so now with a closed vent opening 29 via a valve opening 54 of the pressure chamber 18 to the vent end 57 of the drive cylinder 31 extending pressure line 58, which opens radially into the displacement 45 of the drive cylinder 31, a filling of the drive cylinder with the under working pressure standing gas occurs.

Infolge der Druckbefüllung des Treibzylinders 31 wird der Treibkolben zusammen mit dem daran angeordneten Treibstößel 46 bis zum Anschlag gegen den am Austreibende 41 angeordneten Zylinderboden 49 axial beschleunigt ( Fig. 4 ). Da der Mitnehmerkontakt zwischen der Mitnehmerklinke 52 und dem Ringwulst 53 am Ventilstößel 24 der Befüllungsventileinrichtung 19 so ausgebildet ist, dass sich zwischen der Mitnehmerklinke 52 und dem Ringwulst 53 bei Betätigung des Abzughebels 22 ein abwälzender Kontakt ergibt, wird nach Erreichen eines definierten Hebelwegs des Abzughebels 22 der von der Mitnehmerklinke 52 erfasste Ringwulst wieder freigegeben wird und die Ventilöffnung 54 der Druckkammer 18 über den durch die Schließfeder betätigten Ventilstößel 24 wieder verschlossen.As a result of the pressure filling of the drive cylinder 31, the drive piston is accelerated axially together with the drive ram 46 arranged thereon up to the stop against the cylinder base 49 arranged at the drive end 41 (FIG. Fig. 4 ). Since the driver contact between the driving pawl 52 and the annular bead 53 on the valve tappet 24 of the filling valve device 19 is formed so that there is a rolling contact between the driving pawl 52 and the annular bead 53 when the trigger lever 22 is actuated, after reaching a defined lever travel of the trigger lever 22 detected by the driving pawl 52 annular bead is released again and closed the valve opening 54 of the pressure chamber 18 via the valve operated by the closing spring tappet 24 again.

Durch den Treibstößel 46 wird auf einen Stahlstift 58, der in einem Schusskanal 59 am unteren Ende der Magazinvorrichtung 15 angeordnet ist, ein Schlag ausgeübt, der den im Schusskanal 59 vereinzelten Stahlstift 58 aus dem Schusskanal 59 heraus und in ein gegebenenfalls vor dem Schusskanal angeordnetes Material hinein treibt.By the driving ram 46 is applied to a steel pin 58 which is arranged in a firing channel 59 at the lower end of the magazine device 15, a shock that the isolated in the firing channel 59 steel pin 58 out of the firing channel 59 out and into an optionally arranged in front of the firing channel material into it.

Wenn der Treibkolben 20 sich in seiner austreibseitigen Anschlagstellung, wie in Fig. 3 dargestellt, befindet, ist die als Einströmeinrichtung wirkende Ringkanaleinrichtung 43 freigegeben, so dass das Druckgas aus dem Hubraum 45 des Treibzylinders 31 unter Öffnung der Ringkanaldichtung 68 in die Ringkammer 42 einströmen und aus dieser durch die als Ausströmeinrichtung ausgebildete Ringkanaleinrichtung 44 in einen im Treibzylinder zwischen dem Treibkolben 20 und dem Zylinderboden 49 ausgebildeten Ringspalt 60 unter Druck ausströmen kann. Mit Rückstellung des Abzugshebels 22 durch die Wirkung der Rückstellfeder 34 wird die Entlüftungsöffnung 29 wieder freigegeben, so dass der im Ringspalt 60 wirkende Druck die Rückstellbewegung des Treibkolbens 20 in Richtung auf den Zylinderboden 30 am Entlüftungsende 57 ( Fig. 1 und 2 ) des Treibzylinders 31 bewirkt. Bei der Rückstellung des Abzugshebel 22 in seine Ausgangsstellung wird die gelenkig angeordnete Mitnehmerklinke 52 bei Kontakt mit dem Ringwulst 53 weggeschwenkt.When the driving piston 20 is in its outboard side stop position, as in Fig. 3 shown, the acting as an inflow annular channel device 43 is released, so that the compressed gas from the displacement of the drive cylinder 31 31 under opening the ring channel seal 68 can flow into the annular chamber 42 and can flow out of it through the ring channel device 44 designed as a discharge device into an annular gap 60 formed in the drive cylinder between the drive piston 20 and the cylinder bottom 49 under pressure. With return of the trigger lever 22 by the action of the return spring 34, the vent opening 29 is released again, so that the pressure acting in the annular gap 60, the return movement of the drive piston 20 in the direction of the cylinder bottom 30 at the vent end 57 ( Fig. 1 and 2 ) of the driving cylinder 31 causes. When returning the trigger lever 22 to its initial position, the articulated pawl 52 is pivoted away in contact with the annular bead 53.

Wie aus den Fig. 3 und 4 deutlich wird, wird durch die in der Stößeldurchführung 50 angeordnete Dichteinrichtung 63 ein Leckfluss aus dem Ringspalt 60 bei einer Druckbeaufschlagung des Treibkolbens 20 zur Ausführung einer Rückstellbewegung weitestgehend verhindert. Um, wie in Fig. 4 dargestellt, auch bei einem nicht erfolgten Anschlag des Treibkolbens 20 gegen den Zylinderboden 49 eine Rückstellung des Treibkolbens 20 zu gewährleisten, ist der Abstand zwischen der als Einströmeinrichtung dienenden Ringkanaleinrichtung 43 und dem Zylinderboden 49 größer als die axiale Abmessung des Treibkolbens 20 gewählt. Der Anschlag des Treibkolbens 20 gegen den Zylinderboden 49 kann aufgrund eines zu großen Materialwiderstands beim Eintreiben eines im Schusskanal 59 angeordneten Stahlstifts 58 in ein Material unterbleiben, beispielsweise durch einen Astbereich in einem zu nagelnden Brett verursacht.Like from the 3 and 4 becomes clear, a leakage flow from the annular gap 60 at a pressurization of the driving piston 20 for performing a return movement is largely prevented by the arranged in the ram passage 50 sealing means 63. Um, as in Fig. 4 shown to ensure a return of the driving piston 20 even if a failure of the driving piston 20 against the cylinder bottom 49, the distance between the ring channel device 43 serving as an inflow device and the cylinder bottom 49 is greater than the axial dimension of the driving piston 20 is selected. The stop of the driving piston 20 against the cylinder bottom 49 can be omitted due to a too large material resistance when driving a arranged in the firing channel 59 steel pin 58 in a material, for example caused by a branch area in a board to be nailed.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

1010
Austreibvorrichtungexpulsion
1111
Gerätekörperdevice body
1212
Griffteilhandle part
1313
Treibkolben-/ZylindereinheitDrive piston / cylinder unit
1414
DruckmittelspeicherAccumulator
1515
Magazinvorrichtungmagazine device
1616
Kopplungseinrichtungcoupling device
1717
DruckminderereinrichtungPressure reduction unit
1818
Druckkammerpressure chamber
1919
BefüllungsventileinrichtungFilling valve device
2020
Treibkolbendriving piston
2121
Auslösevorrichtungtriggering device
2222
Abzugshebelsear
2323
Ventilachsevalve axis
2424
Ventilstößeltappet
2525
Stößelstangepushrod
2626
Kipphebelrocker arm
2727
Ventilkolbenplunger
2828
EntlüftungsventileinrichtungThe vent valve assembly
2929
Entlüftungsöffnungvent
3030
Zylinderbodencylinder base
3131
Treibzylinderdriving cylinder
3232
Ventilkörpervalve body
3333
GehäuseentlüftungsöffnungHousing vent
3434
Ventilbohrungvalve bore
3535
Dichteinrichtungsealing device
3636
Dichtungszapfensealing plug
3737
Dichteinrichtungsealing device
3838
Dichtungsraumseal chamber
3939
RingkanaleinrichtungRing passage means
4040
Gehäusecasing
4141
AustreibendeSpurred
4242
Ringkammerannular chamber
4343
RingkanaleinrichtungRing passage means
4444
RingkanaleinrichtungRing passage means
4545
Hubraumcapacity
4646
Treibstößeldrive ram
4747
Einschraubendethreaded end
4848
Sicherungsstiftsafety pin
4949
Zylinderbodencylinder base
5050
StößeldurchführungRam opening
5151
Dichtbundsealing collar
5252
Mitnehmerklinkepawl
5353
Ringwulsttorus
5454
Ventilöffnungvalve opening
5555
Stößelendeplunger end
5656
RückstellfederReturn spring
5757
EntlüflungsendeEntlüflungsende
5858
Stahlstiftsteel pin
5959
Schusskanalfiring channel
6060
Ringspaltannular gap
6161
RückstellfederReturn spring
6262
Ventilbohrungvalve bore
6363
Dichteinrichtungsealing device
6464
Ventilachsevalve axis
6565
TreibzylinderachsePropellant cylinder axis
6666
Ventilfedervalve spring
6767
Dichtelementsealing element
6868
RingkanaldichtungRing channel seal
6969
Radialnutradial groove
7070
O-Ring-DichtungO-ring seal
7171
Schließfederclosing spring

Claims (10)

  1. A pressure medium-operated expulsion device (10) for expelling objects (58) or fluidic substances from a reservoir by means of a driving piston (20) that is acted upon with the pressure medium, wherein the driving piston is acted upon with the pressure medium in order to realize a forward movement of the driving piston, as well as a return movement thereof,
    characterized in
    that a pressure medium reservoir (14) is provided for acting upon the driving piston with the pressure medium and connected to a device body (11), and in that the device body (11) features a pressure chamber (18) that is separated from the pressure medium reservoir (14) by means of a pressure reducing device such that the pressure medium acts upon the driving piston with a working pressure that is reduced relative to the filling pressure of the pressure medium reservoir.
  2. The expulsion device according to Claim 1,
    characterized in
    that a trigger device (21) is provided for triggering the action of the pressure medium upon the driving piston (20), wherein said trigger device simultaneously serves for actuating a ventilating valve (28) for ventilating a driving cylinder (31) that accommodates the driving piston.
  3. The expulsion device according to Claim 2,
    characterized in
    that the ventilating valve (28) is coupled to the trigger device (21) by means of a tappet (25).
  4. The expulsion device according to one of the preceding claims,
    characterized in
    that the ventilating valve (28) is realized in the form of a plunger valve with a valve axis (64) that intersects a driving cylinder axis (65).
  5. The expulsion device according to one of the preceding claims,
    characterized in
    that the driving piston (20) of the driving cylinder (31) simultaneously serves as a control piston for realizing the pressure medium-actuated return movement of the driving piston in the driving cylinder.
  6. The expulsion device according to Claim 5,
    characterized in
    that the region of the expelling end (41) of the driving cylinder (31) is surrounded by an annular chamber (42) with an inflow (43) that is arranged at a distance from the end cross section of the piston-swept volume (45) of the driving cylinder and an outflow (44) that is arranged in the region of the end cross section and leads into the piston-swept volume, wherein the distance between the inflow and the outflow at least corresponds to the axial dimension of the driving piston (20).
  7. The expulsion device according to Claim 6,
    characterized in
    that the expelling end (41) of the driving cylinder (31) features a cylinder bottom (49) with a tappet lead-through (50) for a driving tappet (46) that is connected to the driving piston (20), wherein the tappet lead-through is provided with a radial seal (63).
  8. The expulsion device according to Claim 7,
    characterized in
    that the seal (63) is arranged in the cylinder bottom (49).
  9. The expulsion device according to one of the preceding claims,
    characterized in
    that the reservoir is realized in the form of a magazine (15) for accommodating mechanical fastening means (58), and in that the driving tappet (46) serves for subjecting a fastening means (58) that is accommodated in a blast channel (59) arranged on the magazine in a singularized fashion to an impact.
  10. The expulsion device according to one of Claims 1 to 8,
    characterized in
    that the reservoir is realized in the form of a fluid reservoir, and in that the driving tappet serves for acting upon a fluid quantity that is accommodated in a metering device arranged on the fluid reservoir with pressure.
EP02747401A 2001-06-28 2002-06-17 Expulsion device actuated by a pressure medium Expired - Lifetime EP1399297B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE20110754U DE20110754U1 (en) 2001-06-28 2001-06-28 Network-independent driving tool for fasteners
DE20110754U 2001-06-28
PCT/EP2002/006657 WO2003002308A1 (en) 2001-06-28 2002-06-17 Expulsion device actuated by a pressure medium

Publications (2)

Publication Number Publication Date
EP1399297A1 EP1399297A1 (en) 2004-03-24
EP1399297B1 true EP1399297B1 (en) 2008-10-29

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Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (10)

Country Link
US (1) US6845896B2 (en)
EP (1) EP1399297B1 (en)
JP (1) JP2004520959A (en)
KR (1) KR100578517B1 (en)
CN (1) CN1290671C (en)
AT (1) ATE412493T1 (en)
DE (2) DE20110754U1 (en)
ES (1) ES2314072T3 (en)
TW (1) TWI253970B (en)
WO (1) WO2003002308A1 (en)

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US3850079A (en) * 1970-07-30 1974-11-26 Behrens J Compressed air-operated drive-in apparatus
US3871566A (en) * 1972-07-25 1975-03-18 Behrens Friedrich Joh Fastener driver tools
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DE2946387C2 (en) * 1979-11-16 1986-04-10 Signode Corp., Glenview, Ill. Pneumatically actuated driving tool
DE3309226A1 (en) 1983-03-15 1984-09-20 Hilti Ag, Schaan Compressed-air nailer
DE3502977A1 (en) 1985-01-30 1986-07-31 Robert Bosch Gmbh, 7000 Stuttgart PRINTED DRIVER
GB2265106B (en) * 1992-03-18 1995-07-05 Max Co Ltd Air-pressure-operated impulsion mechanism

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KR20040014994A (en) 2004-02-18
ES2314072T3 (en) 2009-03-16
US20030173393A1 (en) 2003-09-18
CN1464820A (en) 2003-12-31
KR100578517B1 (en) 2006-05-12
DE20110754U1 (en) 2001-10-18
EP1399297A1 (en) 2004-03-24
US6845896B2 (en) 2005-01-25
DE50212965D1 (en) 2008-12-11
CN1290671C (en) 2006-12-20
WO2003002308A1 (en) 2003-01-09
ATE412493T1 (en) 2008-11-15
TWI253970B (en) 2006-05-01
JP2004520959A (en) 2004-07-15

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